RPG Codex forum member "Jedi_Learner" has begun a comprehensive FAQ for Iron Tower Studios' The Age of Decadence. If you haven't been keeping track of all the developer posts on the Codex, this is a good round-up:
Q: How do I get skill points while playing?
A: "...Amount of skill points depends on how you solved a quest (there are no right or wrong ways, but there are different levels of efforts and participation) and could be modified by high Intelligence (faster learning)." - (January 11, 2007) (Ref)